WO2008006760A2 - Super automatic machine for brewing coffee or espresso - Google Patents

Super automatic machine for brewing coffee or espresso Download PDF

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Publication number
WO2008006760A2
WO2008006760A2 PCT/EP2007/056763 EP2007056763W WO2008006760A2 WO 2008006760 A2 WO2008006760 A2 WO 2008006760A2 EP 2007056763 W EP2007056763 W EP 2007056763W WO 2008006760 A2 WO2008006760 A2 WO 2008006760A2
Authority
WO
WIPO (PCT)
Prior art keywords
automatic machine
piston
super automatic
rotor
coffee
Prior art date
Application number
PCT/EP2007/056763
Other languages
French (fr)
Other versions
WO2008006760A3 (en
Inventor
Pietro Russo
Original Assignee
Plast 2000 S.R.L.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Plast 2000 S.R.L. filed Critical Plast 2000 S.R.L.
Publication of WO2008006760A2 publication Critical patent/WO2008006760A2/en
Publication of WO2008006760A3 publication Critical patent/WO2008006760A3/en

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/24—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure
    • A47J31/34—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure
    • A47J31/36—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure with mechanical pressure-producing means
    • A47J31/3604—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure with mechanical pressure-producing means with a mechanism arranged to move the brewing chamber between loading, infusing and ejecting stations
    • A47J31/3609—Loose coffee being employed
    • A47J31/3614—Means to perform transfer from a loading position to an infusing position

Definitions

  • the present invention relates to a super automatic machine for brewing espresso.
  • the term "super automatic machine”, as used herein is intended to mean an apparatus for autonomously carrying out all coffee making steps, from grounding, through brewing, to ejection of used grounds.
  • Figure 2 is a median lateral section of the machine of Figure 1 ,
  • FIG. 3 is a front sectional view of the machine in the ground coffee dose loading configuration
  • FIG. 4 is another sectional view of the machine in the brewing configuration
  • Figure 5 shows the machine in a used cartridge ejection configuration
  • FIG. 6 shows the piston in an exploded view with its internal element.
  • numeral 1 generally designates the central part of a super automatic machine for brewing coffee; reference is made to a central part because the machine 1 has to be equipped with all basic accessories as shown, such as a coffee grinder for making coffee grounds, a boiler and a pump (i.e. a brewing device) as explained below.
  • the super automatic machine 1 is composed of a few elements assembled together, namely a cylindrical rotor 2 , with a peripheral cylinder 3 formed thereon in a radial direction, for a piston 4 to slide therein, said piston being in turn connected via a rod 5 to a fixed pin 6, which is located eccentrically to the axis of rotation Al of the rotor 2 : thus the piston defines a top dead center (TDC) and a bottom dead center (BDC) as shown in the figure.
  • TDC top dead center
  • BDC bottom dead center
  • the piston 4 is driven by rotating the rotor
  • the cylinder 3 extends from the inner surface of the rotor 2 towards the axis Al and an aperture 2a is formed on the rotor, level with the cylinder
  • the sizes or shapes of the aperture 2a and the cylinder will match those of the piston 4 , circular shapes being provided herein.
  • the rotor 2 is rotated by one or more drive members , in this example a pinion 7 which operates on a corresponding toothed portion formed within the rotor 2; the pinion 7 being in turn connected to external mechanisms 8 driven by a motor (not shown) .
  • a motor not shown
  • the actuation of the motor starts the mechanism 8 , and hence the pinion 7 which, by rotating about its own axis A3, drives along the rotor 2 which thus rotates about its own center axis Al .
  • the rotor 2 appears to be supported during rotation by a substantially C-shaped support 9 and held in its correct position by suitable guides 10 or other wheels 11 located on the two side walls 12 which close the machine 1 and press the rotor 2 against the support 9.
  • the support 9 appears to have an aperture 15a; a cylinder 15 extends from such aperture to allow connection with a sort of hydraulic piston 50, whereas the above aperture 15a is closed by a seal 16 having micro-holes, which are designed to be opened, at the right time, by the thrust of water flowing in from the boiler of the brewing unit.
  • the piston 50 can move back and forth in response to the thrust imparted by the overheated (and pressurized) water flowing out of the underlying boiler.
  • the seal 16 has a protuberance 16b which fits in a corresponding hole on the contact surface of the piston 50; at first, the action of boiler pressure pushes the piston 50 and the overlying seal 16 against the surface of the drum 2 thereby sealing the brewing chamber, i.e. the space 20; as pressure rises, the seal 16 is pushed through the protuberance 16b, and the micro-holes are opened thereby allowing the passage of overheated and pressurized water.
  • the seal 16 also acts as an opening control valve, although any pressure valve ma be interposed therebetween between said seal 16 and the hydraulic piston 50.
  • the piston 4 has a downstream element 13 located therein, whose function will be disclosed hereinafter, a pin 14 passing through both elements 4 and 13, for further connection to the rod 5.
  • a hollow conduit 17 extends from the cylinder perpendicular to the axis A2, for liquid coffee to flow out.
  • the operation process of the present machine 1 includes the steps of:
  • the present machine 1 has a stationary drive shaft, as the pin 6 of the rod is held fixed and eccentric, whereas the piston 4 is caused to move up or down thereby compressing and ejecting the loaded dose , by the rotation of the rotor 2.
  • Figures show that, as the cylinder 3 reaches the bottom dead point during counterclockwise rotation, the piston 4 has already moved down enough to contain the amount, i.e. dose, of ground coffee to make one coffee.
  • the ground coffee is automatically loaded by a coffee grinder, which produces the exact dose required by the volume 20;
  • the end of the filling operation may be set by a level tab, not shown, which releases the grinder as soon as the dose is filled, and starts the motor to drive the rotor 2 to the downstream brewing station.
  • the rotor 2 (and hence the cylinder 3) stops for an operator-preset time, thereby producing a coffee having a given concentration.
  • the present machine 1 only heats up when it is operated to control coffee making .
  • the machine 1 is restarted, the rotor 2 rotates and the coffee grounds ejected by the piston 4 thanks to the fact that, as the top dead center TDC is reached, the piston is actually flush with the outer skirt of the case; a scraper may be possibly provided for full removal of the used coffee grounds.
  • the rod 5 has a slot 21 along its own axis with a spring 22 therein to allow the piston 4 to further slide in the cylinder
  • the spring 22 also has the function of slightly hitting the used grounds for easier ejection.
  • the coffee level lever initiates the brewing cycle and releases the grinder: possibly, if no coffee is present, the lever can also stop the whole machine 1 and completely shut down the cycle while warning about the lack of coffee.
  • the coffee grinder used in this invention exhibits outstanding effectiveness and functionality, in that it directly loads coffee into the machine, and can also load exact doses of coffee .
  • a motor brake may be used for always stopping the cylinder 3 and hence the piston 4 in the right position.
  • the machine may carry out an idle washing step, i.e. with no coffee, as soon as it reaches the brewing position, by having hot brewing water flow through the conduits and the interstices of the cylinder 3 and piston 4.
  • the machine can also operate with a classical hopper system; in this case coffee will be loaded by gravity or using a stirrer and the cylinder 3 and piston 4 will have to stop before the loading area, still with the help of special sensors .
  • the piston 4 is illustrated in detail in Fig. 6: it has a substantially circular section and a plurality of small holes 30 on its top surface 4a, two side holes 4b for a pin 14 to be fitted therein and a slot 4c formed along a lower annular band 4b; finally, on the upper edge, roughly corresponding to the area of the surface 4a, a circular housing 4e is formed for the introduction of an elastic band or a lip seal (not shown) , which enhances isolation of the infusion during the passage of overheated water.
  • the piston 4 is shown in an exploded view, with its internal element 13 conveying the infusion towards the conduit 17 via a canalization 31 that links the top 13a to a recess 13b formed level with the aperture 4c.
  • the overheated water flows through the seal 16 and the ground coffee dose, passes through the holes 30 (as shown by arrow Fl) and reaches the surface 13a of the internal element 13, wherefrom it flows into the canalization 31 and into the recess 13b (arrows F2) and flows out of the slot 4c to spread through the annular band 4b and finally the conduit 17 from which it is discharged in the form of liquid coffee .
  • the super automatic machine 1 for brewing coffee is characterized in that it comprises a rotor 2 which rotates about its own axis Al on a support 9 and drives along a peripheral cylinder 3 with a piston 4 sliding therein, the latter being connected via a rod 5 to a pin 6 that is fixed eccentrically to said axis of rotation Al, thereby defining a bottom dead center and a top dead center; an aperture 2a is defined on the rotor 2 , level with the cylinder 3 , for the dose of ground coffee to be loaded therein in a first angular position of the rotor 2 and for the infusion to flow out in a second angular position of the rotor 2; in a third angular position, downstream from said second position, the piston 4 ejects the used coffee grounds out of the same aperture 2a.
  • the third angular position is defined near the top dead center of the piston 4
  • said first loading position is defined upstream from the bottom dead center of the piston, in a counterclockwise direction, i.e. from the third to the first positions; at the latter position the piston 4 has already moved down enough to contain an amount, i.e. a dose of ground coffee to make one coffee .
  • said first, second and third positions are covered in one full turn of the rotor (2) .
  • said second position, or brewing position may be located in any angular length between the bottom dead center and the top dead center.
  • the machine 1 will be made from any material that can withstand its specific operating pressures; it will be preferably formed of plastic material .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Apparatus For Making Beverages (AREA)
  • Tea And Coffee (AREA)

Abstract

A super automatic machine (1) for brewing coffee is characterized in that it comprises a rotor (2) which rotates about its own axis (A1) on a support (9) and drives along a peripheral cylinder (3) with a piston (4) sliding therein, the latter being connected via a rod (5) to a pin (6) that is fixed eccentrically to said axis of rotation (A1), thereby defining a bottom dead center and a top dead center; an aperture (2a) is defined on the rotor (2), level with the cylinder (3), for the dose of ground coffee to be loaded therein in a first angular position of the rotor (2) and for the infusion to flow out in a second angular position of the rotor (2); in a third angular position, downstream from said second position, the piston (4) ejects the used coffee grounds out of the same aperture (2a). Said first, second and third positions are covered in one full turn of the rotor (2).

Description

TITLE: SUPER AUTOMATIC MACHINE FOR BREWING COFFEE OR ESPRESSO
DESCRIPTION
The present invention relates to a super automatic machine for brewing espresso.
The term "super automatic machine", as used herein is intended to mean an apparatus for autonomously carrying out all coffee making steps, from grounding, through brewing, to ejection of used grounds.
In prior art traditional super automatic machines, the various operating steps are carried out through the rotation of a drive shaft which causes a piston to move up and down through a rod. With the present super automatic machine, the drive shaft is stationary, and the rotation, i.e. revolution, of the cylindrical case causes the sliding piston to move up and down a peripheral cylinder formed on the case. The present super automatic machine achieves the following advantages :
> Simple mechanical operation,
> Dramatically low industrialization costs,
> Practical operation advantages , > Reduced space requirements.
These objects and advantages are achieved by the super automatic machine for brewing coffee of this invention, which is characterized as defined in the annexed claims . These and other features will be more apparent from the following description of a few embodiments, which are shown by way of example and without limitation in the accompanying drawings, in which: - Figure 1 is a general perspective view of a super automatic machine of this invention,
- Figure 2 is a median lateral section of the machine of Figure 1 ,
- Figure 3 is a front sectional view of the machine in the ground coffee dose loading configuration ,
- Figure 4 is another sectional view of the machine in the brewing configuration,
Figure 5 shows the machine in a used cartridge ejection configuration,
- Figure 6 shows the piston in an exploded view with its internal element.
Referring to Figures 1 and 2 , numeral 1 generally designates the central part of a super automatic machine for brewing coffee; reference is made to a central part because the machine 1 has to be equipped with all basic accessories as shown, such as a coffee grinder for making coffee grounds, a boiler and a pump (i.e. a brewing device) as explained below.
The super automatic machine 1 is composed of a few elements assembled together, namely a cylindrical rotor 2 , with a peripheral cylinder 3 formed thereon in a radial direction, for a piston 4 to slide therein, said piston being in turn connected via a rod 5 to a fixed pin 6, which is located eccentrically to the axis of rotation Al of the rotor 2 : thus the piston defines a top dead center (TDC) and a bottom dead center (BDC) as shown in the figure.
The piston 4 is driven by rotating the rotor
2 , and hence the peripheral cylinder 3.
The cylinder 3 extends from the inner surface of the rotor 2 towards the axis Al and an aperture 2a is formed on the rotor, level with the cylinder
3, for the piston 4 to communicate with the other external accessories and to define the various coffee making steps .
The sizes or shapes of the aperture 2a and the cylinder will match those of the piston 4 , circular shapes being provided herein.
The rotor 2 is rotated by one or more drive members , in this example a pinion 7 which operates on a corresponding toothed portion formed within the rotor 2; the pinion 7 being in turn connected to external mechanisms 8 driven by a motor (not shown) . As a result, the actuation of the motor starts the mechanism 8 , and hence the pinion 7 which, by rotating about its own axis A3, drives along the rotor 2 which thus rotates about its own center axis Al .
Referring now to Figures 3, 4 and 5, the rotor 2 appears to be supported during rotation by a substantially C-shaped support 9 and held in its correct position by suitable guides 10 or other wheels 11 located on the two side walls 12 which close the machine 1 and press the rotor 2 against the support 9.
In this example, a single wall 12 is shown for simplicity.
Particularly referring to Figure 4 , the support 9 appears to have an aperture 15a; a cylinder 15 extends from such aperture to allow connection with a sort of hydraulic piston 50, whereas the above aperture 15a is closed by a seal 16 having micro-holes, which are designed to be opened, at the right time, by the thrust of water flowing in from the boiler of the brewing unit.
The piston 50 can move back and forth in response to the thrust imparted by the overheated (and pressurized) water flowing out of the underlying boiler.
The seal 16 has a protuberance 16b which fits in a corresponding hole on the contact surface of the piston 50; at first, the action of boiler pressure pushes the piston 50 and the overlying seal 16 against the surface of the drum 2 thereby sealing the brewing chamber, i.e. the space 20; as pressure rises, the seal 16 is pushed through the protuberance 16b, and the micro-holes are opened thereby allowing the passage of overheated and pressurized water.
Thus, the seal 16 also acts as an opening control valve, although any pressure valve ma be interposed therebetween between said seal 16 and the hydraulic piston 50.
Furthermore, a seal (not shown) will be interposed between the boiler and the piston 50.
The piston 4 has a downstream element 13 located therein, whose function will be disclosed hereinafter, a pin 14 passing through both elements 4 and 13, for further connection to the rod 5.
A hollow conduit 17 extends from the cylinder perpendicular to the axis A2, for liquid coffee to flow out.
The operation process of the present machine 1 includes the steps of:
- loading a dose of ground coffee in the space 20 created between the top of the piston 4 and the walls of the cylinder 3; said space being defined in an angular position of the rotor 2 , i.e. the cylinder 3,
- compressing the ground coffee and bringing it to a second angular position, in which it will be brewed with overheated water, thereby producing liquid coffee,
- ejecting the used coffee grounds and placing the cylinder 3 back into next use position.
The above process is carried out within one full turn of the rotor 2, as also shown by Figure 3 and those that come next.
As a result, unlike traditional super automatic machines, in which the operating steps are carried out through the rotation of a drive shaft which causes a piston to move up and down via a rod, the present machine 1 has a stationary drive shaft, as the pin 6 of the rod is held fixed and eccentric, whereas the piston 4 is caused to move up or down thereby compressing and ejecting the loaded dose , by the rotation of the rotor 2.
Figures show that, as the cylinder 3 reaches the bottom dead point during counterclockwise rotation, the piston 4 has already moved down enough to contain the amount, i.e. dose, of ground coffee to make one coffee.
Here, the ground coffee is automatically loaded by a coffee grinder, which produces the exact dose required by the volume 20; The end of the filling operation may be set by a level tab, not shown, which releases the grinder as soon as the dose is filled, and starts the motor to drive the rotor 2 to the downstream brewing station.
It shall be noted that, upon counterclockwise rotation, the dose is compressed as the piston moves from the BDC to the brewing station.
Once the brewing position is reached, here at
90° from the bottom dead center, the rotor 2 (and hence the cylinder 3) stops for an operator-preset time, thereby producing a coffee having a given concentration.
It shall be noted that the present machine 1 only heats up when it is operated to control coffee making .
Then, the machine 1 is restarted, the rotor 2 rotates and the coffee grounds ejected by the piston 4 thanks to the fact that, as the top dead center TDC is reached, the piston is actually flush with the outer skirt of the case; a scraper may be possibly provided for full removal of the used coffee grounds.
It shall be noted that the rod 5 has a slot 21 along its own axis with a spring 22 therein to allow the piston 4 to further slide in the cylinder
3 (the rod 5 being position adjustable) ; as soon as the brewing station is reached, excessive coffee compression may be prevented by allowing the piston
4 to move back towards the center of the rotor 2; a stop 23 will prevent the piston 4 from moving back through an excessive length. The spring 22 also has the function of slightly hitting the used grounds for easier ejection.
The coffee level lever initiates the brewing cycle and releases the grinder: possibly, if no coffee is present, the lever can also stop the whole machine 1 and completely shut down the cycle while warning about the lack of coffee.
The coffee grinder used in this invention exhibits outstanding effectiveness and functionality, in that it directly loads coffee into the machine, and can also load exact doses of coffee .
In this example, the various steps are controlled by position sensors and/or by the coffee dose level lever as described above. A motor brake may be used for always stopping the cylinder 3 and hence the piston 4 in the right position.
The machine may carry out an idle washing step, i.e. with no coffee, as soon as it reaches the brewing position, by having hot brewing water flow through the conduits and the interstices of the cylinder 3 and piston 4.
While reference has been mainly made herein to a use with an automatic grinder, the machine can also operate with a classical hopper system; in this case coffee will be loaded by gravity or using a stirrer and the cylinder 3 and piston 4 will have to stop before the loading area, still with the help of special sensors .
The piston 4 is illustrated in detail in Fig. 6: it has a substantially circular section and a plurality of small holes 30 on its top surface 4a, two side holes 4b for a pin 14 to be fitted therein and a slot 4c formed along a lower annular band 4b; finally, on the upper edge, roughly corresponding to the area of the surface 4a, a circular housing 4e is formed for the introduction of an elastic band or a lip seal (not shown) , which enhances isolation of the infusion during the passage of overheated water.
The piston 4 is shown in an exploded view, with its internal element 13 conveying the infusion towards the conduit 17 via a canalization 31 that links the top 13a to a recess 13b formed level with the aperture 4c.
As the brewing step is initiated, the overheated water flows through the seal 16 and the ground coffee dose, passes through the holes 30 (as shown by arrow Fl) and reaches the surface 13a of the internal element 13, wherefrom it flows into the canalization 31 and into the recess 13b (arrows F2) and flows out of the slot 4c to spread through the annular band 4b and finally the conduit 17 from which it is discharged in the form of liquid coffee .
In short, the super automatic machine 1 for brewing coffee is characterized in that it comprises a rotor 2 which rotates about its own axis Al on a support 9 and drives along a peripheral cylinder 3 with a piston 4 sliding therein, the latter being connected via a rod 5 to a pin 6 that is fixed eccentrically to said axis of rotation Al, thereby defining a bottom dead center and a top dead center; an aperture 2a is defined on the rotor 2 , level with the cylinder 3 , for the dose of ground coffee to be loaded therein in a first angular position of the rotor 2 and for the infusion to flow out in a second angular position of the rotor 2; in a third angular position, downstream from said second position, the piston 4 ejects the used coffee grounds out of the same aperture 2a.
The third angular position is defined near the top dead center of the piston 4 , whereas said first loading position is defined upstream from the bottom dead center of the piston, in a counterclockwise direction, i.e. from the third to the first positions; at the latter position the piston 4 has already moved down enough to contain an amount, i.e. a dose of ground coffee to make one coffee .
Therefore, it can be noted that said first, second and third positions are covered in one full turn of the rotor (2) .
It should be further noted that said second position, or brewing position, may be located in any angular length between the bottom dead center and the top dead center. The machine 1 will be made from any material that can withstand its specific operating pressures; it will be preferably formed of plastic material .

Claims

1. A super automatic machine 1 for brewing coffee is characterized in that it comprises a rotor (2) which rotates about its own axis (Al) on a support (9) and drives along a peripheral cylinder (3) with a piston (4) sliding therein, the latter being connected via a rod (5) to a pin (6) that is fixed eccentrically to said axis of rotation (Al) ; an aperture (2a) is defined on the rotor (2) , level with the cylinder (3) , for the dose of ground coffee to be loaded therein in a first angular position of the rotor (2) and for the infusion to flow out in a second angular position of the rotor (2) ; in a third angular position, downstream from said second position, the piston (4) ejects the used coffee grounds out of the same aperture (2a) .
2. A super automatic machine (1) as claimed in claim 1, characterized in that said third angular position is defined near the top dead center of the piston (4) .
3. A super automatic machine (1) as claimed in claim 1, characterized in that said first loading position is defined upstream from the bottom dead center of the piston, in a counterclockwise direction, i.e. from the third to the first positions; at said position the piston (4) has already moved down enough to contain an amount, i.e. a dose of ground coffee to make one coffee .
4. A super automatic machine (1) as claimed in claim 1, characterized in that said first, second and third positions are covered in one full turn of the rotor (2) .
5. A super automatic machine (1) as claimed in claim 1, characterized in that basic coffee making accessories are connected to the rotor (2) , such as an automatic grinder or a hopper for introducing ground coffee, a brewing device, a tank for the used grounds.
6. A super automatic machine (1) as claimed in claim 1, characterized in that the peripheral cylinder (3) extends along a radial direction with respect to the axis (Al) of rotation of the rotor (2) from the inner surface of the rotor (2) towards the axis (Al) .
7. A super automatic machine (1) as claimed in claim 1, characterized in that the piston (4) communicates with the other external accessories through the aperture (2a) , and defines the various coffee making steps.
8. A super automatic machine (1) as claimed in claim 1, characterized in that the rotor (2) is driven into rotation by one or more drive members .
9. A super automatic machine (1) as claimed in claim 8, characterized in that said drive members include a pinion (7) which operates on a corresponding toothed portion formed within the rotor (2) ; the pinion (7) being in turn connected to external motor-driven mechanisms (8) .
10. A super automatic machine (1) as claimed in claim 1, characterized in that the support (9) is substantially C-shaped.
11. A super automatic machine (1) as claimed in claim 1 , characterized in that said two side walls (12) close the rotor (2) and its support (9) at their sides.
12. A super automatic machine (1) as claimed in claim 1, characterized in that the rotor (2) is held in position on the support (9) by guides (10) and/or wheels (11) located on the two closing side walls (12) which press said rotor (2) against the support (9) .
13. A super automatic machine (1) as claimed in claim 1, characterized in that the support (9) has an aperture (15a) and a cylinder (15) extends from such aperture to allow connection with a sort of hydraulic piston (50) , whereas the above aperture (15a) is closed by a seal (16) having micro-holes, which are designed to be opened, at the right time, by the thrust of water flowing in from the boiler of the brewing unit.
14. A super automatic machine (1) as claimed in claim 13, characterized in that the piston can move back and forth in response to the thrust imparted by the overheated (and pressurized) water flowing out of the underlying boiler.
15. A super automatic machine (1) as claimed in claim 13, characterized in that the seal (16) has a protuberance (16b) which fits in a corresponding hole on the contact surface of the piston (50) .
16. A super automatic machine (1) as claimed in claim 13, characterized in that a pressure valve is interposed between said seal (16) and the hydraulic piston (50) .
17. A super automatic machine (1) as claimed in claim 13, characterized in that said aperture (15a) is closed by a seal having micro-holes which are designed to be opened as overheated water flows in from the boiler of the brewing unit.
18. A super automatic machine (1) as claimed in claim 1, characterized in that the piston (4) has a downstream element (13) located therein, a pin (14) passing through both elements (4, 13), for further connection to the rod (5) .
19. A super automatic machine (1) as claimed in claim 1, characterized in that the cylinder (3) comprises a hollow conduit (17) out of which liquid coffee flows.
20. A super automatic machine (1) as claimed in claim 1, characterized in that the dose of ground coffee is loaded in the space (20) created between the top of the piston (4) and the inner surface of the cylinder (3) .
21. A super automatic machine (1) as claimed in claim 5, characterized in that the grinder is designed to produce the exact dose required by the space (20) .
22. A super automatic machine (1) as claimed in claim 5, characterized in that the grinder is designed to produce the exact dose required by the space (20) .
23. A super automatic machine (1) as claimed in claims 1 and 5, characterized in that the end of the filling operation is set by a level tab which releases the grinder as soon as the dose is filled, and starts the motor to drive the rotor (2) to the downstream brewing position.
24. A super automatic machine (1) as claimed in claim 1, characterized in that, in said second brewing position, the rotor (2) and hence the cylinder (3) stops for an operator-preset time, thereby producing a coffee having a given concentration .
25. A super automatic machine (1) as claimed in claim 1, characterized in that said second brewing position is located substantially at 90° from the bottom dead center.
26. A super automatic machine (1) as claimed in claim 1, characterized in that the coffee dose is ejected by the piston (4) thanks to the fact that, as the top dead center TDC is reached, the piston (4) is actually flush with the outer skirt of the rotor (2) .
27. A super automatic machine (1) as claimed in claim 26, characterized in that a scraper may be located at said third ejection area, for full removal of the used coffee grounds .
28. A super automatic machine (1) as claimed in claim 1, characterized in that the rod (5) has a slot (21) along its own axis with a spring (22) therein to allow the piston (4) to further slide in the cylinder (3) ; a stop (23) prevents the piston (4) from moving back through an excessive length.
29. A super automatic machine (1) as claimed in claim 1, characterized in that if no coffee is present, the level lever completely shuts down the cycle while warning about the lack of coffee.
30. A super automatic machine (1) as claimed in claim 1, characterized in that the various angular positions of the rotor (2) are controlled by position sensors and/or by the coffee dose level lever .
31. A super automatic machine (1) as claimed in claim 1, characterized in that the cylinder (3) is stopped in the brewing position by a motor brake .
32. A super automatic machine (1) as claimed in claim 1, characterized in that it may carry out an idle washing step, i.e. with no coffee, as soon as it reaches the brewing position, by having hot brewing water flow through the conduits and the interstices of the cylinder (3) and piston (4) .
33. A super automatic machine (1) as claimed in claim 5, characterized in that, if loading occurs through a hopper arrangement, it will use gravity or a stirrer and the cylinder (3) with the piston (4) therein will have to stop upstream from the loading area, still with the help of special sensors.
34. A super automatic machine (1) as claimed in claims 1 and 18, characterized in that the piston (4) has a substantially circular section and a plurality of small holes (30) on its top surface (4a) , two side holes (4b) for a pin (14) to be fitted therein and a slot (4c) formed along a lower annular band (4b) ; on the upper edge, roughly corresponding to the area of the surface (4a) , a circular housing (4e) is formed for the introduction of an elastic band or a lip seal, which enhances isolation of the infusion during the passage of overheated water.
35. A super automatic machine (1) as claimed in claims 1 and 18, characterized in that the internal element (13) conveys the infusion towards the conduit (17) via a canalization (31) that links the top (13a) to a recess (13b) formed level with the aperture (4c) of the piston (4) .
36. A super automatic machine (1) as claimed in claims 1 and 18, characterized in that at said second brewing position and upon initiation of the brewing step, the overheated water flows through the seal (16) and the ground coffee dose, passes through the holes (30) and reaches the surface (13a) of the internal element (13) , wherefrom it flows into the canalization (31) and into the recess (13b) and flows out of the slot (4c) to spread through the annular band (4b) and finally the conduit (17) from which it is discharged in the form of liquid coffee.
37. A super automatic machine (1) as claimed in claim 1, characterized in that, in said second position, the infusion is made using an external overheated water producing unit.
38. A super automatic machine (1) as claimed in claims 1 and 37 , characterized in that said second position, or brewing position, may be located in any angular length between the bottom dead center and the top dead center.
39. A super automatic machine (1) as claimed in claim 1, characterized in that it is made from any material that can withstand its specific operating pressures .
40. A super automatic machine (1) as claimed in claim 1, characterized in that it is formed of plastic material.
PCT/EP2007/056763 2006-07-14 2007-07-04 Super automatic machine for brewing coffee or espresso WO2008006760A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPR2006A000065 2006-07-14
ITPR20060065 ITPR20060065A1 (en) 2006-07-14 2006-07-14 SUPER AUTOMATIC MACHINE FOR THE PRODUCTION OF COFFEE OR ESPRESSO COFFEE INFUSES

Publications (2)

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WO2008006760A2 true WO2008006760A2 (en) 2008-01-17
WO2008006760A3 WO2008006760A3 (en) 2008-07-24

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IT (1) ITPR20060065A1 (en)
WO (1) WO2008006760A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114466607A (en) * 2019-10-14 2022-05-10 韦吉斯斯坦纳股份公司 Method for making coffee and apparatus for performing the method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0629371A1 (en) * 1993-06-15 1994-12-21 EGI S.n.c. di BRAMBILLA S. & C. Automatic assembly for delivering coffee infusions with means for ejecting the coffee grounds
DE19647385C1 (en) * 1996-11-15 1998-08-13 Spengler Getraenkemaschinen Gm Automatic coffee and tea making machine
WO1998039998A1 (en) * 1997-03-13 1998-09-17 Egro Ag Automatic coffee maker
DE202005010724U1 (en) * 2005-01-19 2006-02-16 Wang, Dong-lei, Zhuhai Automatic coffee maker

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0629371A1 (en) * 1993-06-15 1994-12-21 EGI S.n.c. di BRAMBILLA S. & C. Automatic assembly for delivering coffee infusions with means for ejecting the coffee grounds
DE19647385C1 (en) * 1996-11-15 1998-08-13 Spengler Getraenkemaschinen Gm Automatic coffee and tea making machine
WO1998039998A1 (en) * 1997-03-13 1998-09-17 Egro Ag Automatic coffee maker
DE202005010724U1 (en) * 2005-01-19 2006-02-16 Wang, Dong-lei, Zhuhai Automatic coffee maker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114466607A (en) * 2019-10-14 2022-05-10 韦吉斯斯坦纳股份公司 Method for making coffee and apparatus for performing the method

Also Published As

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WO2008006760A3 (en) 2008-07-24
ITPR20060065A1 (en) 2008-01-15

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